that map is known to have clipping issues on the PS4 version, so dont run around crying wolf, not everything you dont understand is caused by foul play.

lol frankof crying like wolf lol but they should test it if that works if thats work then that are bug??but i dont know i just play in pc and i know ps4 consol you can do it but its banned in consol right.)

Collision bounds of mesh vs character collision . Some of the walls do it too. A character can be up against some walls then press lean . You can then see through the wall at an angle.
The map of mine used by AAL EU . i had to use different wall inside the broken walls as the collision is not so good and could be leant through.